Data · dataset · 2026
Marine boundary layers above heterogeneous SST: Across-front winds
Listed in National Center for Atmospheric Research
Turbulent flow in a weakly convective marine atmospheric boundary layer (MABL) driven by geostrophic winds U-g = 10 m s(-1) and heterogeneous sea surface temperature (SST) is examined using fine-mesh large-eddy simulation (LES).
Description
The imposed SST heterogeneity is a single-sided warm or cold front with temperature jumps Delta theta = (2, -1.5) K varying over a horizontal distance between [0.1 , -6] km characteristic of an upper-ocean mesoscale or submesoscale regime.
A Fourier-fringe technique is implemented in the LES to overcome the assumptions of horizontally homogeneous periodic flow. Grid meshes of 22 x 10(9) points with fine-resolution (horizontal, vertical) spacing (delta x = delta y, delta z) = (4.4, 2) m are used. Geostrophic winds blowing across SST isotherms generate secondary circulations that vary with the sign of the front.
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Warm fronts feature overshoots in the temperature field, nonlinear temperature and momentum fluxes, a local maximum in the vertical velocity variance, and an extended spatial evolution of the boundary layer with increasing distance from the SST front. Cold fronts collapse the incoming turbulence but leave behind residual motions above the boundary layer. In the case of a warm front, the internal boundary layer grows with downstream distance conveying the surface changes aloft and downwind.
SST fronts modify entrainment fluxes and generate persistent horizontal advection at large distances from the front.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7wd440h ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/marine-boundary-layers-above-heterogeneous-sst-across-… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=334a504b-5af2-4c0c-b4e1-cc65dace8… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Simulation 75%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 334a504b-5af2-4c0c-b4e1-cc65dace82aa | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[method].local:method:simulation | enrichment · data ucar edu | keyword-concept-rules@1.0.0 | title+description (75%) |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |